#include <iostream>

using namespace std;

class person {
	public:
		int m_Age;

		void showClassName() {
			cout << "person" << endl;
		}

		void showPersonAge() {
			cout << "age:" << this->m_Age << endl;
		}
};

int main() {
	person *p = NULL;
	p->showClassName();
	p->showPersonAge();

	return 0;
}